Your DNA contains millions of genetic variants that interact with each other in ways that affect whether diseases such as ...

One gene causes one trait or a specific illness. When doctors use genetics, it's usually to try to identify a disease-causing ...

Tetralogy of Fallot is a heart defect with four main heart-related complications. The most common symptom of TOF is a bluish color of the skin, also known as cyanosis. Life expectancy after surgery to ...